diff --git a/src/erpc_setup.cpp b/src/erpc_setup.cpp
index b6533e9..127a901 100644
--- a/src/erpc_setup.cpp
+++ b/src/erpc_setup.cpp
@@ -78,7 +78,7 @@ class MyMessageBufferFactory : public MessageBufferFactory
 
 char * rpc_system_version(void)
 {
-    return "2.1.0";
+    return "2.1.1";
 }
 
 uint8_t rpc_system_ack(uint8_t c)